Johnson had a chance to win it for Kentucky (7-2), but his 3-point try with a second remaining was blocked by Quincy McKnight. The ball went out of bounds as time expired, and excited Pirates players rushed off the bench to celebrate a huge win.

Myles Powell scored 25 of his 28 points after halftime for Seton Hall (6-3), including a tiebreaking 3 in the final seconds of the second half.

"It took a lot of effort, but ... we were ready," Powell said. "We fought, we never gave up, we stayed together and we got the job done."

The clock showed 1.1 seconds after Powell's step-back, double-clutch jumper from the left side went through, but officials made it 1.5 seconds after a replay review. That made all the difference for Kentucky when PJ Washington inbounded from the baseline and threw a long pass to an open Johnson, even though the play wasn't designed for him to receive the ball.

Kentucky rooters roared and Seton Hall coach Kevin Willard, stomping and pointing on the sideline only moments before, simply dropped his head in disbelief. A blue-clad crowd of 10,244, split between the schools probably in Kentucky's favor, was still buzzing as the teams got ready for overtime to settle the Citi Hoops Classic.

"I am not discouraged in any way," Calipari said. "We've got a ways to go. I mean, every year I go through this. This is painful and aging, trying to figure out your team, trying to win games while you're trying to figure them out, how you finish games and trying to get them to mature quickly. It's just hard. And you know what? I'm going to have to go through it again."

Cale scored a career-best 17 on 4-of-18 shooting. With the Pirates trailing 83-81, he took a pass from Taurean Thompson on the right side, pump-faked a defender and drained an open 3 to send Seton Hall to its fifth victory in six games.

Kentucky head coach John Calipari reacts to play against Seton Hall Pirates during the first half of an NCAA college basketball game, Saturday, Dec. 8, 2018, in New York. Seton Hall won 84-83 in overtime. (AP Photo/Noah K. Murray) (Source: Noah K. Murray)

"We practice that all the time," Cale said.

McKnight had 15 points and five assists. Thompson, who missed Tuesday's win over New Hampshire with an ankle injury, contributed 13 points off the bench.

Seton Hall quickly recovered from Johnson's incredible shot, scoring the first four points in overtime. A 3-pointer by Johnson with 43.9 seconds left gave the Wildcats an 82-81 lead, and Ashton Hagans made one of two free throws for Kentucky with 24.9 seconds to go.

Seton Hall: The underdog Pirates pulled off the upset for a big resume-builder in their toughest test yet as they tune up for Big East play, which begins Dec. 29 against St. John's. After making three consecutive trips to the NCAA Tournament, including a win over N.C. State last season, Seton Hall is trying to duplicate that success with a new group led by Powell. Last season's senior class combined for more than 5,000 points, and only five Pirates on the current roster played for the team last season.

Kentucky: The team's lack of perimeter shooting was exposed. Kentucky went 5 for 20 (25 percent) from 3-point range, including 0 of 6 by Tyler Herro. "We made strides. We're a better team than we were two weeks ago," Calipari said. "I've got a lot to figure out offensively."

Seton Hall: Michael Nzei, Sandro Mamukelashvili and Jared Rhoden fouled out. ... Powell got hot late and finished 6 for 11 on 3s. ... Playing about 17 miles from their New Jersey campus, the Pirates improved to 9-3 at Madison Square Garden over the last three seasons.

New York Yankees general manager Brian Cashman had a front-row seat along the sideline. Cashman went to high school in Lexington, Kentucky, before moving to Washington. Former New York Giants star Justin Tuck also was in the crowd.

China Lee

Matt Wallner lined a two-run home run over the right-field fence, completing an improbable five-run rally over the final two innings Wednesday night as Southern Miss walked off a 6-4 victory in the opening round of the 2019 Conference USA Baseball Championship at MGM Park.